| The security of network is one of the important study content of the security of information , it is the research hotpot of the information security domain. The security of data is mostly content of the network's security. At present the quite practical method is the data which transmits to the network in carries on the encryption, but the data encryption must rely on the mature data encryption algorithm. DES and RSA are two kind of applications extremely widespread and the mature data encryption algorithm. This article through carries on the analysis to DES and the RSA encryption technology, designed in the VC++ platform realizes the network data encryption system. Namely establishes a safe data transmission system, including the exchange of information form, the swap agreement and algorithm, thus guarantee network data safe transmission. The system design establishes to the present popular distributional system foundation, namely guaranteed each Agent and the central controller carries on the safe correspondence, can be suitable for the different application environment. Compared with other platform, VC++ can make the system has more enficiency and practicability . During realization of the system we make good use of the characteristic and advantage of VC++ so that we can enhance reliability of the system. |